From d0a87bea723398da519330abb028e4ce3faa5abe Mon Sep 17 00:00:00 2001
From: "Dr. Maxim Orlovsky" <orlovsky@pandoracore.com>
Date: Sun, 12 Dec 2021 16:24:31 +0200
Subject: [PATCH] Add slice 'serialize' method for TweakedPublicKey

---
 src/util/schnorr.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/util/schnorr.rs b/src/util/schnorr.rs
index 44dde217..2a2bc19f 100644
--- a/src/util/schnorr.rs
+++ b/src/util/schnorr.rs
@@ -18,7 +18,7 @@
 //!
 
 pub use secp256k1::schnorrsig::{PublicKey, KeyPair};
-use secp256k1::{Secp256k1, Verification};
+use secp256k1::{Secp256k1, Verification, constants};
 use hashes::Hash;
 use util::taproot::{TapBranchHash, TapTweakHash};
 use core::fmt;
@@ -79,7 +79,6 @@ impl TapTweak for UntweakedPublicKey {
     }
 }
 
-
 impl TweakedPublicKey {
     /// Creates a new [`TweakedPublicKey`] from a [`PublicKey`]. No tweak is applied, consider
     /// calling `tap_tweak` on an [`UntweakedPublicKey`] instead of using this constructor.
@@ -97,4 +96,11 @@ impl TweakedPublicKey {
         &self.0
     }
 
+    /// Serialize the key as a byte-encoded pair of values. In compressed form
+    /// the y-coordinate is represented by only a single bit, as x determines
+    /// it up to one bit.
+    #[inline]
+    pub fn serialize(&self) -> [u8; constants::SCHNORRSIG_PUBLIC_KEY_SIZE] {
+        self.0.serialize()
+    }
 }